diff --git a/dlls/d3d9/tests/d3d9ex.c b/dlls/d3d9/tests/d3d9ex.c
index 6e111169b03..090ecfc5b80 100644
--- a/dlls/d3d9/tests/d3d9ex.c
+++ b/dlls/d3d9/tests/d3d9ex.c
@@ -269,7 +269,7 @@ static void test_get_adapter_displaymode_ex(void)
     memset(&startmode, 0, sizeof(startmode));
     startmode.dmSize = sizeof(startmode);
     startmode.dmFields = DM_DISPLAYORIENTATION;
-    startmode.dmDisplayOrientation = DMDO_180;
+    S2(U1(startmode)).dmDisplayOrientation = DMDO_180;
 
     retval = pChangeDisplaySettingsExA(NULL, &startmode, NULL, 0, NULL);
 
@@ -282,7 +282,7 @@ static void test_get_adapter_displaymode_ex(void)
     ok(retval == DISP_CHANGE_SUCCESSFUL,"ChangeDisplaySettingsEx failed with %d\n", retval);
     /* try retrieve orientation info with EnumDisplaySettingsEx*/
     startmode.dmFields = 0;
-    startmode.dmDisplayOrientation = 0;
+    S2(U1(startmode)).dmDisplayOrientation = 0;
     ok(pEnumDisplaySettingsExA(NULL, ENUM_CURRENT_SETTINGS, &startmode, EDS_ROTATEDMODE), "EnumDisplaySettingsEx failed\n");
 
     /*now that orientation has changed start tests for GetAdapterDisplayModeEx: invalid Size*/
@@ -310,7 +310,7 @@ static void test_get_adapter_displaymode_ex(void)
     /* don't know yet how to test for ScanLineOrdering, just testing that it is set to a value by GetAdapterDisplayModeEx*/
     todo_wine ok(mode_ex.ScanLineOrdering != 0, "ScanLineOrdering returned 0\n");
     /* check that orientation is returned correctly by GetAdapterDisplayModeEx and EnumDisplaySettingsEx*/
-    todo_wine ok(startmode.dmDisplayOrientation == DMDO_180 && rotation == D3DDISPLAYROTATION_180, "rotation is %d instead of %d\n", rotation, startmode.dmDisplayOrientation);
+    todo_wine ok(S2(U1(startmode)).dmDisplayOrientation == DMDO_180 && rotation == D3DDISPLAYROTATION_180, "rotation is %d instead of %d\n", rotation, S2(U1(startmode)).dmDisplayOrientation);
 
     trace("GetAdapterDisplayModeEx returned Width = %d,Height = %d, RefreshRate = %d, Format = %x, ScanLineOrdering = %x, rotation = %d\n",
           mode_ex.Width, mode_ex.Height, mode_ex.RefreshRate, mode_ex.Format, mode_ex.ScanLineOrdering, rotation);